CVE-2025-50181: Python URLLIB3

Medium severity, CVSS 6.1. EPSS: 0.5% chance of exploitation in the next 30 days.

urllib3 is a user-friendly HTTP client library for Python. Prior to 2.5.0, it is possible to disable redirects for all requests by instantiating a PoolManager and specifying retries in a way that disable redirects. By default, requests and botocore users are not affected. An application attempting to mitigate SSRF or open redirect vulnerabilities by disabling redirects at the PoolManager level will remain vulnerable. This issue has been patched in version 2.5.0.

Affected products

• Python URLLIB3: before 2.5.0 (fixed in 2.5.0)

Published 2025-06-19. Last modified 2026-06-17.